Paddle-wheel.



PATENTED MAY 10, 1904.

E. GHAQUETTE.

PADDLE WHEEL. APPLICATION FILED JULY 31,1902.

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PATENTED MAY 10, 1904. B. GHAQUETTE.

PADDLE WHEEL.

APPLICATION mum JULY 31, 1902.

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E. GHAQUETTE.

PADDLE WHEEL.

APPLIGATION FILED JULY 31, 1902.

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iTF Safes Patented May 10, 1904.

EPHRAIEM (JI-IAQUETTE, OF NFJV ROCHELLE, NFJV YORK.

PADDLE-WHEEL.

SPECIFICATIQN forming part of Letters Patent No. 759,238, dated May 10, 1904.

Application filed July 31, 1902. Serial No. 117,847. (No model.)

To all whom, it may calmer/1,:

Be it known that I, EPHRAIEM Crnionu'r'ru, a citizen of the United States, and a resident of New Rochelle, county of Nestchester, State of New York, have invented certain new and useful Improvements in Boat- Propelling Vlheels, of which the following is a specification.

The object of my invention is to provide a new form of paddle-wheel which may be used either as a side wheel or propeller, according to the character of the vessel to which it is applied.

My improved wheel does away with all possibility of backwash, avoids thesli iiping and noise of ordinary iaddlc-wheels, whether moving forward or backward, and accomplishes its work with great smoothness and steadiness. To accomplish these objects, 1 so construct the paddle-wheel that the paddles when not in use to displace the water necessary for propulsion are received inside the wheel and only thrust out as the turning of the wheel brings the individual paddles into position for Work. I effect this resultmainly by constructing a stationary cam, by placing the fixed stationary cam inside the frame or shell of the paddle-wheel, and causing the paddle-wheel to 'revolve around said lixed cam. The cam-path is shaped according to the needs of the individual wheel with which it is used and serves to thrust out at the proper time those paddles which are required to act upon the water and to draw in and keep within the outer periphery of the wheel the rest of the paddles.

To this end my invention consists, therefore, in a paddle-wheel composed of a revolving shell or frame, a fixed cam located therein and so constructed as to act gradually and constantly upon the various paddle-blades, and a number of blades adapted to be thrust out ward or drawn inward through said shell under the operation of said cam, whereby when the Wheel turns in one direction the blades are withdrawn from the water before they become perpendicular and enter the water at the same angle when the wheel is reversed.

It is to be understood that my improved wheel is to be used either at the side of a vessel or at the stern. When used at the side, it is preferably only partially submerged. hen used at the stern, it is preferably double and preferably submerged. It is also to be understood that the number of blades and the character of the cam-path will vary with the amount of work and degree of submersion required for the particular wheel.

One form of my invention is shown in the accompanying drawings, in which- Figure 1 is a side elevation. Fig. 2 is a vertical section. Fig. 3 is a crosssection.

Same letters indicate similar parts in the d iiferent drawings.

A represents the deck-timbers or other framework upon which the propeller and its driving mechanism are mounted.

B is a supportirig-frame for the wheel and serves also as a hood for the same.

C is a driving-gear mounted upon the shaft a and operated from the engine or other source of power. (Not shown.) This shaft is journalcd in the bearings in the parts 7), mounted upon the deck, and the wheel is closed in or protected by the hood or cover 0.

D is the paddle-wheel, loosely mounted on the stationary shaft (Z, which is journaled in the frame a, which forms part of the supporting-frame B. This paddle-wheel consists of the shell E, preferably cast in a solid piece and provided with the channels 7", through which the paddle-blades are projected when needed. This shell is loosely mounted upon the shaft (Z, (see Fig. 3,) being provided with the antifriction-bearings Revolution is imparted to this shell by the gear F, rigidly secured thereto, the teeth of which mesh with the gear C, before referred to. By casting the shell and its paddle-channels as one solid piece uniformity of action on the part of the various blades is secured and there is less liability to disarrangement or breakage of the parts. Inside the open space 71., constituting the interior of the wheel, is located the paddle-blade cam Gr, which is keyed to the shaft (Z. This cam is double-faced, having a campath on both surfaces. As before stated,

the configuration of this cam-path will vary with the number of paddles and the work required of the wheel.

H 11 represent the pzuldle-blades, the outer ends of which are recessed, as shown at 7' is, so that the water may be fairly caught both in the forward and backward strokes of the paddle. By reason of the angular character of the striking-surface a large portion of the noise which usually attends the use of a paddle-wheel is done away with. At the inner end these paddles are provided with a pair of rollers Z Z, one of which enters the cam-path on one side of the cam and the other on the other side. The inner ends of the paddles, as well as the rollers, are kept in place by the bolt m, which runs through from side to side. The blades of the paddle are preferably cast in a solid piece and bolted by bolts n '71. 12 to the yoke portion J, which is also preferably dovetailed, as shown at 0.

hen the wheel is in use, the shaft (Z is stationary; but to adapt the cam to assume dif ferent positions as required by the different depths to which the wheel may be submerged I provide an arm M, keyed to the shaft (Z, by means of which the shaft and cam may be turned into a variety of positions. The outer end of the arm M is provided with a pin 19, which may be inserted in the sockets .5 s, which are made in the frame B. hen thus inserted, the arm prevents the shaft (Z and cams from turning, and it will be readily understood that the outthrust and inthrust caused by the cams will vary between the limits of the series of sockets s s s.

It is to be noticed that by reason of this construction there is no strain whatever upon the cam from the blades which are in the water, as the water-pressure, being at right angles to the blades, is received entirely by the shell of the wheel.

The operation of my improved paddle-wheel is as follows: Having determined at what point of the periphery of the wheel the successive blades are to be shot out and about what point withdrawn, the cam is turned in a corresponding position by the arm M, the pin of which is then set in the appropriate socket. The wheel is now started and revolves about the cam, the various blades being held within the periphery of the wheel until their rollers reach such a position in the cam-path that the blades are thrust outward from the wheel. As the wheel turns the blades thus thrust out strike against the water, thus propelling the boat. As soon as a blade has reached a position where it no longer has an effective stroke upon the water it is withdrawn into the shell by the configuration of the cam at that point.

I claim i 1. A boat-propelling wheel which consists of a revolving shell loosely mounted upon a shaft, means for imparting rotation to said shell, a fixed cam located inside said shell, a number of blades adapted to be projected out ward or drawn back through the periphery of said shell under the operation of said cam and a cam-path upon the face of said cam so constructed as to cause each blade in succession to emerge gradually from said shell and to be withdrawn into the same in such manner that every blade is moving outward or inward during the entire revolution of said shell.

2. A boat-propelling wheel which consists of a revolving shell loosely mounted upon a shaft, a gear rigidlv secured to said shell, a driving-gear mounted upon a revolving shaft and meshing with said first-mentioned gear, a fixed cam located inside said shell, a number of blades adapted to be projected outward or drawn back through the periphery of said shell under the operation of said cam and a cam-path upon the face of said cam so constructed as to cause each blade in succession to emerge gradually from said shelland to be withdrawn into the same in such manner that every blade is moving outward or inward during the entire revolution of said shell.

EPHRAIEM GHAQUETTE.

Witnesses:

W. P. PREBLE, Jr., ADA PERRY. 

